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Pyramidal Refinement of Lucas – Kanade Optical Flow based Tracking of Peripheral Air Embolism in OCT Contrast Imaging

by Kausik Basak, Manjunatha M, Pranab Kumar Dutta
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 52 - Number 12
Year of Publication: 2012
Authors: Kausik Basak, Manjunatha M, Pranab Kumar Dutta
10.5120/8252-1777

Kausik Basak, Manjunatha M, Pranab Kumar Dutta . Pyramidal Refinement of Lucas – Kanade Optical Flow based Tracking of Peripheral Air Embolism in OCT Contrast Imaging. International Journal of Computer Applications. 52, 12 ( August 2012), 7-12. DOI=10.5120/8252-1777

@article{ 10.5120/8252-1777,
author = { Kausik Basak, Manjunatha M, Pranab Kumar Dutta },
title = { Pyramidal Refinement of Lucas – Kanade Optical Flow based Tracking of Peripheral Air Embolism in OCT Contrast Imaging },
journal = { International Journal of Computer Applications },
issue_date = { August 2012 },
volume = { 52 },
number = { 12 },
month = { August },
year = { 2012 },
issn = { 0975-8887 },
pages = { 7-12 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume52/number12/8252-1777/ },
doi = { 10.5120/8252-1777 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T20:52:03.261311+05:30
%A Kausik Basak
%A Manjunatha M
%A Pranab Kumar Dutta
%T Pyramidal Refinement of Lucas – Kanade Optical Flow based Tracking of Peripheral Air Embolism in OCT Contrast Imaging
%J International Journal of Computer Applications
%@ 0975-8887
%V 52
%N 12
%P 7-12
%D 2012
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Air embolism often causes severe consequences in patients, in which several cases need fast treatment at the earlier stage. This paper proposes a computerized approach for detection as well as estimation of motion trajectory of air emboli using OCT contrast imaging technique. Due to change in optical properties, speckle pattern changes from fluid to air bubble and so does the speckle pattern on the image plane. This phenomenon helps to track the air bubble due to change in brightness pattern over a sequence of images. A top-down approach has been demonstrated from the image acquisition to the application of different image processing algorithms. Segmentation of the embolus has been carried out primarily by selecting seed contour through anisotropic diffusion (AD) technique and then implementation of a snake based active contour (AC) method. Both the techniques reduce the manual labour and computational time, thereby substantially increasing the segmentation accuracy (92% - 94%). Besides, pyramidal construction of the Lucas – Kanade optical flow precisely optimizes the flow velocities of air bubble and also increases larger motion tracking ability. Hence, the proposed technique can becoming an assisting tool to the clinician for early detection of air embolism and tracking the air bubble through microcirculation.

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Index Terms

Computer Science
Information Sciences

Keywords

Optical coherence tomography (OCT) active contour air embolism image segmentation optical flow least square estimation

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